Tire sidewall



FIG. 1 is a front elevation view of a tire sidewall showing our new design;

FIG. 2 is a perspective view thereof; and,

FIG. 3 is an enlarged fragmentary front elevational view thereof.

In the drawings, the broken lines defining the tread, inner bead and the peripheral boundaries between the tire sidewall and the tread and inner bead are for illustrative purposes only and form no part of the claimed design. 

The ornamental Design for a tire sidewall, as shown and described. 